Output to /dev/null, not "0"

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136955 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/2011-03-08-ZeroFieldUnionInitializer.c b/test/CodeGen/2011-03-08-ZeroFieldUnionInitializer.c
index bb66d21..ff570d8 100644
--- a/test/CodeGen/2011-03-08-ZeroFieldUnionInitializer.c
+++ b/test/CodeGen/2011-03-08-ZeroFieldUnionInitializer.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -emit-llvm %s -o 0
+// RUN: %clang_cc1 -emit-llvm %s -o /dev/null
 typedef struct {
   union {
     struct { } __attribute((packed));